| Sofia to Ridgeland (Mississippi) | 5,756.29 mi (9,263.85 km) |
| Sofia to Ridgewood (New Jersey) | 4,705.68 mi (7,573.06 km) |
| Sofia to Rifle (Colorado) | 5,984.37 mi (9,630.91 km) |
| Sofia to Rincon (Georgia) | 5,396.63 mi (8,685.04 km) |
| Sofia to Ringwood (New Jersey) | 4,707.00 mi (7,575.18 km) |
| Sofia to Río Grande (Puerto Rico) | 5,324.29 mi (8,568.61 km) |
| Sofia to Rio Grande City (Texas) | 6,412.59 mi (10,320.06 km) |
| Sofia to Rio Linda (California) | 6,395.38 mi (10,292.38 km) |
| Sofia to Rio Rancho (New Mexico) | 6,194.91 mi (9,969.75 km) |
| Sofia to Rio Rico (Arizona) | 6,549.38 mi (10,540.21 km) |
| Sofia to Ripon (California) | 6,447.32 mi (10,375.95 km) |
| Sofia to River Edge (New Jersey) | 4,705.01 mi (7,571.98 km) |
| Sofia to River Falls (Wisconsin) | 5,216.55 mi (8,395.23 km) |
| Sofia to River Forest (Illinois) | 5,195.69 mi (8,361.65 km) |
| Sofia to River Grove (Illinois) | 5,194.93 mi (8,360.44 km) |
